Stainless Steel Slip-On Flange ASTM A182 F304/F316 ANSI B16.5 Class 150 RF DN15-DN600 Forged

Our stainless steel slip-on flanges are precision-forged from ASTM A182 F304 and F316 grade stainless steel, designed for easy and cost-effective pipe connection. Engineered to ANSI B16.5 Class 150 standards with a raised face (RF) configuration, these slip-on flanges feature a bore slightly larger than the pipe OD, allowing the pipe to slide in before fillet welding on both inside and outside. This design provides reliable sealing at lower cost compared to weld neck alternatives while maintaining full pressure containment for a wide range of industrial piping systems.

• Premium Material: Forged from ASTM A182 F304/F304L and F316/F316L stainless steel, providing superior corrosion and oxidation resistance for chemical, petrochemical, and marine applications
• Slip-On Design: Simplified installation with pipe slipping through the bore, requiring only two fillet welds (inside and outside) reducing labor costs compared to weld neck flanges
• ANSI B16.5 Compliance: Manufactured to exact ASME/ANSI B16.5 dimensional tolerances ensuring full interchangeability with standard piping components worldwide
• Raised Face Seal: RF surface finish (125-250 AARH) ensures optimal gasket compression and leak-free performance across the full pressure-temperature rating
• Full Traceability: Each flange is heat-number stamped with EN 10204 3.1 material test certificates (MTC) available upon request for full quality traceability

We offer comprehensive OEM and brand customization services for slip-on flanges to align with your brand identity and project specifications. Custom manufacturing options include non-standard bore diameters, special flange thicknesses, and modified bolt circle patterns beyond standard ANSI dimensions. Brand customization services feature laser-etched company logos on flange faces, custom heat-number stamping with your part numbering system, and branded plywood case packaging with your corporate artwork. Our engineering team collaborates closely with clients to develop tailored flange solutions for unique piping system requirements.

With a proven track record of global exports to over 50 countries, we provide end-to-end logistics support for slip-on flange shipments worldwide. Our export documentation package includes Certificates of Origin (Form A, E, or F depending on destination), commercial invoices, detailed packing lists, and fumigation certificates. All slip-on flanges are packed in ISPM 15 certified fumigated plywood cases with polyethylene waterproof film and VCI anti-corrosion paper for pristine delivery after ocean transit. Our freight forwarding partnerships with major carriers provide competitive rates and reliable delivery schedules to ports across North America, Europe, Middle East, Southeast Asia, and Africa.

• Chemical processing plant low to medium pressure piping
• Water and wastewater treatment facility distribution lines
• Food and beverage processing sanitary transfer lines
• HVAC and plumbing system connections
• Shipbuilding and marine piping systems
• Fire protection sprinkler system connections
• General industrial utility piping networks

Our ISO 9001:2015 certified quality management system governs every production stage from incoming raw material PMI (Positive Material Identification) testing through in-process dimensional verification to final visual and dimensional inspection. Third-party inspection by internationally recognized agencies including SGS, Bureau Veritas, TUV Rheinland, and Lloyd's Register is available upon request. We are committed to delivering slip-on flanges that consistently meet or exceed industry standards and customer expectations.